BIOS Tuning
BIOS tuning must be performed on both the server and client nodes. In addition, you need to restart the server and then access the BIOS to perform BIOS tuning. Otherwise, OS services will be interrupted. For details, see "Accessing the BIOS" in TaiShan Server BIOS Parameter Reference (Kunpeng 920 Processor).
Enabling the Performance Mode
- Purpose
Increase the CPU frequency and maximize the CPU performance.
- Procedure
Access the BIOS, choose Advanced > Performance Config > Power Policy, and set Power Policy to Performance.
Disabling SMMU
- Purpose
Ensure that the
SMMU does not affect performance. - Procedure
Access the BIOS, choose Advanced > MISC Config > Support Smmu, and set Support Smmu to Disabled.
Disabling CPU Prefetching
- Purpose
Disable CPU prefetching to prevent it from affecting performance.
- Procedure
Access the BIOS, choose Advanced > MISC Config > CPU Prefetching Configuration, and set CPU Prefetching Configuration to Disabled.
Setting the Memory Refresh Rate
- Purpose
Set the memory refresh rate to 64 ms to shorten the latency.
- Procedure
Access the BIOS, choose Advanced > Memory Config > Custom Refresh Rate, and set Custom Refresh Rate to 64ms.